CN107120410B

CN107120410B - Anti-backlash spur gear

Info

Publication number: CN107120410B
Application number: CN201710459307.1A
Authority: CN
Inventors: 王洪海; 周坤
Original assignee: Yancheng Heding Machinery Co ltd
Current assignee: Beijing Rosenge Machinery Co ltd
Priority date: 2017-06-16
Filing date: 2017-06-16
Publication date: 2023-12-29
Anticipated expiration: 2037-06-16
Also published as: CN107120410A

Abstract

The invention discloses an anti-backlash straight gear which comprises a gear body and a gear, wherein a hub is arranged at the right end of the gear body, a groove is formed in the outer portion of the hub, at least two oil suction grooves are formed in the outer portion of the groove, the gear is arranged on the hub and fixed through a clamp spring clamped on the hub at the right end of the gear body, a tension spring is arranged on the right side of the gear, one end of the tension spring is connected to a gear body lifting ring screw, the other end of the tension spring is connected to the gear lifting ring screw, the gear body lifting ring screw is arranged on the gear body, and the gear lifting ring screw is arranged on the gear. The anti-backlash straight gear can effectively eliminate clearance abrasion between gear teeth, lubricate the tooth surfaces of meshed gears, cool down, protect the gears from being damaged by high temperature, and prolong the service life of the gears.

Description

Anti-backlash spur gear

Technical Field

The invention relates to the technical field of mechanical transmission parts, in particular to an anti-backlash spur gear.

Background

The gear transmission is a transmission form which is most widely applied in mechanical transmission, has the advantages of more accurate transmission, high efficiency, compact structure, reliable work and long service life, a pair of gears are compact and gapless in meshing, but in reality, in order to compensate deformation caused by installation errors and temperature fusion so as to prevent clamping or meshing abrasion, a gap is reserved on a non-main meshing surface of gear teeth, and lubricating oil is reserved when the gear teeth are meshed, but the gap brings a section of idle stroke when the gear is in reverse rotation, so that the transmission mechanism cannot be in timely meshing transmission, and in order to eliminate the gap, the common gap elimination method comprises double-gear gap elimination, gear center distance adjustment method gap elimination, spring-loaded double-piece gear gap elimination, double-worm gap elimination, friction gap elimination, double-motor gap elimination, electric control difference gap elimination, and the prior art, wherein the spring-loaded double-row gear gap elimination is the most common, but the spring-loaded double-row gear gap elimination cannot be in high-speed condition, the gear is subjected to cooling treatment, and further abrasion of the gear can be caused.

Disclosure of Invention

The invention aims to provide an anti-backlash spur gear, the problem that the gear cannot be cooled when the anti-backlash gear runs at a high speed in the prior art is solved.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a straight gear that disappears clearance, includes gear body and gear, gear body right-hand member is provided with wheel hub, the wheel hub outside is provided with the recess, the recess outside is provided with two at least arc oil absorption grooves, install the gear on the wheel hub, the gear is fixed through the jump ring of card on the wheel hub of gear body right-hand member, the gear right side is provided with tension spring, tension spring one end is connected on gear body rings screw, and the tension spring other end is connected on gear rings screw, gear body rings screw is installed on gear body, gear rings screw is installed on the gear.

Preferably, the oil absorption groove is horn-shaped with the depth of 1mm, and an opening at one end close to the teeth is large.

Preferably, an oil absorption foam layer is arranged in the groove.

Preferably, the oil absorbing foam layer is specifically polyurethane soft foam.

Preferably, the method comprises the steps of, the gear is provided with an arc waist hole which is convenient for installation of the gear body eye screw.

Preferably, the tension springs are uniformly provided with three groups in the circumferential direction.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the oil absorption foam layer is arranged in the groove, the oil absorption foam layer is a polyurethane soft foam layer, the oil absorption foam layer has oleophylic and hydrophobic properties, the oil storage operation can be carried out under the capillary action, the plurality of arc oil absorption grooves are arranged outside the groove, the oil absorption grooves are in a horn shape with the depth of 1mm, the opening at one end close to the teeth is large, the arc horn shape can discharge oil more uniformly, the oil discharge amount is better controlled, the gear is provided with the arc waist holes which are convenient for installing the ring screw of the gear body, the space required by torsion displacement is provided for the torsion of the gear by the arc waist holes, the tension springs are uniformly provided with three groups in the circumferential direction, the three groups are uniformly arranged in the circumferential direction, the sufficient torsion tension of the gear can be ensured, the uniform circumferential distribution can not generate eccentric force, the oil absorption foam layer is more stable, the oil storage is discharged through the oil absorption grooves under the action of the centrifugal force, the oil absorption grooves uniformly fall onto the tooth surface of the gear meshed with the gear body, the lubrication and the temperature is reduced, the gear is protected from being damaged by high temperature damage, and the service life of the gear is prolonged.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a front view of a gear according to the present invention;

fig. 4 is a front view of the gear body of the present invention.

In the figure: 1-a gear body; 101-a hub; 102-grooves; 103-an oil suction groove; 2-gear; 3-gear body eye screws; 4-a tension spring; 5-gear eye screws; 6-clamping springs; 7-oil absorbing foam layer.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, in the embodiment of the invention, an anti-backlash spur gear comprises a gear body 1 and a gear 2, wherein the right end of the gear body 1 is provided with a hub 101, a shaft hole with a key groove is arranged in the hub 101, installation between the shaft and the gear is facilitated, a groove 102 is arranged outside the hub 101, an oil absorption foam layer 7 is arranged inside the groove 102, the oil absorption foam layer 7 is a polyurethane soft foam layer, the anti-backlash spur gear has oleophilic hydrophobicity, oil storage operation can be performed under capillary action, at least two arc-shaped oil absorption grooves 103 are arranged outside the groove 102, the oil absorption grooves 103 are horn-shaped with the depth of 1mm, one end close to the gear is large, the arc-shaped horn-shaped oil can be discharged more uniformly, the oil discharge amount is better, the oil absorption grooves 103 are convenient to suck and discharge oil, the hub 101 is provided with the gear 2, the gear 2 is fixed by a clamp spring 6 on the hub 101 clamped on the right end of the gear body 1, an arc waist hole convenient for installing a ring screw 3 of the gear body, the arc waist hole also provides a space required by torsion displacement for torsion movement of the gear 2, a spring 4 is arranged on the right side of the gear 2, the spring 4 can provide a torsion force required by the torsion screw 4, the torsion screw 4 can be evenly arranged on the gear body 4, the ring screw body is arranged on the circumference of the gear body 4 is provided with a set of the ring screw 4, the tension is more evenly, the tension is arranged on the ring screw 4 is more evenly, the ring screw is connected with the ring screw 4, and the tension is more evenly arranged on the ring screw 4, the ring body is provided on the ring body is more evenly has a tension spring is connected with the ring 4, and has a tension force is provided, and has a sufficient tension force is more stable tension on the tension, and has a tension force equal tension set tension, and can be more and has and can be more stable tension, and can be provided.

The working principle of the invention is as follows: when the gear 2 and the gear body 1 generate a small section of twisting displacement under the tension of the tension spring 4 during low-speed rotation, the teeth of the gear 2 and the gear body 1 can be respectively clung to the tooth groove meshing surface and the non-meshing surface of the meshing gear, the meshing surface cannot be damaged, the tooth side gap is eliminated through the staggered tooth structure of the gear 2 and the gear body 1, meanwhile, the oil absorbing foam layer 7 starts to store oil through the oil absorbing groove 103 under the action of capillary phenomenon, when the gear rotates at a high speed, the oil absorbing foam layer 7 stores oil under the action of centrifugal force and starts to be discharged through the oil absorbing groove 103, the oil absorbing groove 103 uniformly spills on the tooth surface of the gear meshed with the gear 2 and the gear body 1 to lubricate and cool, the gear is protected from being damaged by high temperature damage, and the service life of the gear is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a straight gear that disappears clearance, includes gear body (1) and gear (2), its characterized in that: the gear comprises a gear body (1), and is characterized in that a hub (101) is arranged at the right end of the gear body (1), a gear (2) is mounted on the hub (101), the gear (2) is fixed through a clamp spring (6) clamped on the hub (101) at the right end of the gear body (1), a tension spring (4) is arranged on the right side of the gear (2), one end of the tension spring (4) is connected to a gear body lifting ring screw (3), the other end of the tension spring (4) is connected to a gear lifting ring screw (5), the gear body lifting ring screw (3) is mounted on the gear body (1), and the gear lifting ring screw (5) is mounted on the gear (2); the gear (2) is provided with an arc waist hole which is convenient for installing the gear body eye screw (3); the tension springs (4) are uniformly provided with three groups in the circumferential direction;

a groove (102) is formed in the outer portion of the hub (101), and at least two arc-shaped oil suction grooves (103) are formed in the outer portion of the groove (102); the groove (102) and the oil absorption groove (103) are positioned on the side surface of the gear body (1) close to the gear (2), and the side surface of the gear body (1) close to the gear (2) is a plane; the oil absorption groove (103) is horn-shaped with the depth of 1mm, and the opening at one end close to the teeth is large, and the opening at one end far away from the teeth is small;

an oil absorption foam layer (7) is arranged in the groove (102);

the oil absorption foam layer (7) is made of polyurethane soft foam.